RCS3216J183CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216J183CS is an 18 kOhms ±5% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This thick film resistor features anti-sulfur and moisture-resistant construction, operating across -55°C to 155°C with a temperature coefficient of ±100ppm/°C. The part is RoHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when design requirements permit tolerance relaxation, power rating increases, or when alternative manufacturers' components meet or exceed the electrical and mechanical specifications of the original part.

Key Parameters

Parameter	Value
Resistance	18 kOhms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216J183CS is determined by the following criteria:

Primary Matching Parameters:

Resistance value: 18 kOhms (exact match required)
Package / Case: 1206 (3216 Metric) (exact match required)
Power rating: 0.25W minimum (equal or higher acceptable)
Composition: Thick Film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C minimum (equal or wider acceptable)

Secondary Matching Parameters:

Tolerance: ±5% (exact match) or ±1% (tighter tolerance acceptable as direct substitute)
RoHS compliance: ROHS3 Compliant (required)
Moisture Sensitivity Level: 1 (Unlimited) (required)

Substitute parts are grouped into two categories:

Category A - Direct Equivalents (±5% Tolerance): Parts with identical tolerance to the main part, differing only in manufacturer or packaging format.

Category B - Enhanced Substitutes (±1% Tolerance): Parts with tighter tolerance specifications, suitable for applications requiring improved accuracy. These parts maintain all other electrical and mechanical parameters.

Category C - Enhanced Power Rating: Parts with 0.75W power rating in the same package, suitable for applications requiring higher power dissipation capability while maintaining the 1206 form factor.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	RoHS	MSL	Product Status
RCS3216J183CS	Samsung Electro-Mechanics	18 kΩ	±5%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
AC1206JR-0718KL	YAGEO	18 kΩ	±5%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
RC1206JR-0718KL	YAGEO	18 kΩ	±5%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
AC1206FR-0718KL	YAGEO	18 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
RC1206FR-0718KL	YAGEO	18 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
CR1206-FX-1802ELF	Bourns Inc.	18 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
CRCW120618K0FKEA	Vishay Dale	18 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
CRCW120618K0FKEAHP	Vishay Dale	18 kΩ	±1%	0.75	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
ERJ-8ENF1802V	Panasonic Electronic Components	18 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

AC1206JR-0718KL and RC1206JR-0718KL are direct equivalents with ±5% tolerance matching the RCS3216J183CS. Both are manufactured by YAGEO and maintain identical electrical and mechanical parameters. These parts are suitable for applications where the original tolerance specification is required and no design changes are necessary.

For Enhanced Accuracy Applications:

AC1206FR-0718KL, RC1206FR-0718KL, CR1206-FX-1802ELF, and CRCW120618K0FKEA provide ±1% tolerance in the same 1206 package. These substitutes are applicable when circuit design permits tighter tolerance specifications. All four parts maintain the 0.25W power rating and identical temperature characteristics.

For Automotive and High-Reliability Applications:

AC1206FR-0718KL, AC1206JR-0718KL, CRCW120618K0FKEA, CRCW120618K0FKEAHP, and ERJ-8ENF1802V carry AEC-Q200 automotive qualification. These parts are suitable for automotive-grade applications requiring enhanced reliability certifications.

For Increased Power Dissipation:

CRCW120618K0FKEAHP provides 0.75W power rating while maintaining the 1206 package footprint. This part is applicable when circuit requirements exceed the 0.25W specification of the original part.

Parts to Avoid for New Designs:

ERJ-8ENF1802V carries "Not For New Designs" product status. While electrically and mechanically compatible, this part should not be selected for new circuit designs due to manufacturer discontinuation trajectory.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance resistor as a substitute for the ±5% RCS3216J183CS?

A: Yes. A ±1% tolerance part meets or exceeds the specification of a ±5% part. The tighter tolerance provides improved accuracy and is directly substitutable without circuit redesign.

Q: Are all substitute parts available in the same 1206 package?

A: Yes. All listed substitute parts use the 1206 (3216 Metric) package. Physical dimensions and PCB footprints are compatible across all parts listed.

Q: What is the difference between AC1206JR-0718KL and RC1206JR-0718KL?

A: Both parts are manufactured by YAGEO with identical electrical specifications (18 kΩ, ±5%, 0.25W, 1206 package). The primary difference is packaging format: AC1206JR-0718KL is supplied in Tape & Reel format, while RC1206JR-0718KL is supplied in Cut Tape & Digi-Reel format. Selection depends on procurement and assembly requirements.

Q: Can I use CRCW120618K0FKEAHP (0.75W) in place of RCS3216J183CS (0.25W)?

A: Yes. The 0.75W part is rated for higher power dissipation and is directly substitutable. The higher power rating does not create compatibility issues; it only provides additional thermal margin. Use this part when circuit power dissipation requirements exceed 0.25W.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status, matching the environmental compliance of the original RCS3216J183CS.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the lowest moisture sensitivity level. These parts can be stored indefinitely without special moisture control measures and do not require baking before soldering. All listed parts maintain MSL 1 rating.

Q: Why is ERJ-8ENF1802V marked "Not For New Designs"?

A: This designation indicates the manufacturer (Panasonic) is discontinuing this product line. While the part remains electrically and mechanically compatible, it should not be selected for new circuit designs to avoid future supply chain disruption.

Q: Do all substitute parts operate across the same temperature range?

A: Yes. All listed substitute parts operate from -55°C to 155°C with ±100ppm/°C temperature coefficient, matching the RCS3216J183CS specifications.

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